1340341040 has 40 divisors (see below), whose sum is σ = 3123603648. Its totient is φ = 534878720.

The previous prime is 1340341027. The next prime is 1340341049. The reversal of 1340341040 is 401430431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1340341049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15044 + ... + 53916.

Almost surely, 2^1340341040 is an apocalyptic number.

1340341040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340341040 is an abundant number, since it is smaller than the sum of its proper divisors (1783262608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340341040 is a wasteful number, since it uses less digits than its factorization.

1340341040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39317 (or 39311 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1340341040 is about 36610.6683905115. The cubic root of 1340341040 is about 1102.5672927836.

Adding to 1340341040 its reverse (401430431), we get a palindrome (1741771471).

The spelling of 1340341040 in words is "one billion, three hundred forty million, three hundred forty-one thousand, forty".